This is the 15700th most frequent German word.
zuhanden
"Zuhanden" means "at hand" or "available."
Here, 'zuhanden' indicates something addressed or intended specifically for someone.
Das Paket wurde Ihnen zuhanden an die Adresse geliefert.
The package was delivered to the address addressed to you.
In this use, 'zuhanden' is used in correspondence to specify the recipient for whom the content is intended.
Bitte lassen Sie den Brief zuhanden Herrn Müller in der Poststelle.
Please have the letter delivered to Mr. Müller in the mailroom.
Here, 'zuhanden' shows that the document is explicitly prepared for a specific group or individual.